EP 0341092 A2 19891108 - A method of identifying specific objects or zones.
Title (en)
A method of identifying specific objects or zones.
Title (de)
Verfahren zur Identifizierung von spezifischen Objekten oder Gebieten.
Title (fr)
Procédé pour identifier des objets ou des domaines spécifiques.
Publication
Application
Priority
- GB 8810723 A 19880506
- GB 8816165 A 19880707
- GB 8826225 A 19881109
- GB 8906853 A 19890323
Abstract (en)
In order to identify specific objects such as diamonds (or zones of an article), the objects 2 are subjected to an exciting radiation chosen such that the objects to be identified emit a weaker luminescence which is characteristic of the object and a stronger luminescence which is less characteristic of the object. The weaker luminescence is detected using a large aperture optical system 6-13 and a photo-multiplier tube 14. The stronger luminescence is detected more directly using a CCD array 20 or 20 min , which locates the track on the conveyer belt 1 from which the signal was emitted. In accordance with the track, the appropriate sort jet 23 is actuated when the PMT 14 and the CCD array 20, 20 min give simultaneous signals.
IPC 1-7
IPC 8 full level
G01N 23/22 (2006.01); B07C 5/342 (2006.01); G01N 21/64 (2006.01); G01N 21/65 (2006.01); G01N 21/87 (2006.01); G01N 21/84 (2006.01); G01N 21/85 (2006.01); G01N 21/86 (2006.01)
CPC (source: EP)
B07C 5/3427 (2013.01); B07C 5/366 (2013.01); G01N 21/64 (2013.01); G01N 21/65 (2013.01); G01N 21/85 (2013.01); G01N 2021/1734 (2013.01); G01N 2021/1789 (2013.01); G01N 2021/845 (2013.01); G01N 2021/8636 (2013.01); G01N 2201/0697 (2013.01)
Designated contracting state (EPC)
BE DE NL
DOCDB simple family (publication)
EP 0341092 A2 19891108; EP 0341092 A3 19910227; AU 3454389 A 19891109; AU 623140 B2 19920507; BR 8902138 A 19900102; DE 341092 T1 19900816; GB 2219082 A 19891129; GB 2219082 B 19920826; GB 8910420 D0 19890621; JP H0298656 A 19900411
DOCDB simple family (application)
EP 89304635 A 19890508; AU 3454389 A 19890508; BR 8902138 A 19890508; DE 89304635 T 19890508; GB 8910420 A 19890505; JP 11403589 A 19890506